android - List item is not visible in fragment -

i developing music app. following code of songs list. when run app, music artworks showing. other information album name, duration not showing in listview.

public class songs_list extends fragment {  // adapter exposes data cursor listview widget. private songs_list.mediacursoradapter mediaadapter = null;  private string currentfile=""; private boolean isstarted = true; private textview selelctedfile = null; private view v=null;  @override public view oncreateview(layoutinflater inflater, viewgroup container,                          bundle savedinstancestate) {      // use cursor data external resource      cursor cursor = getactivity().getcontentresolver().query(mediastore.audio.media.external_content_uri, null, null, null, null);      // check cursor has data or not      if (null != cursor) {         cursor.movetofirst();          mediaadapter = new mediacursoradapter(getactivity().getapplicationcontext(), r.layout.list_layout, cursor);         v=inflater.inflate(r.layout.fragment_songs_list, container, false);        // textview title = (textview) view.findviewbyid(r.id.title);          listview lv = (listview)v.findviewbyid(android.r.id.list);          lv.setadapter(mediaadapter);       }     // inflate layout fragment      return v; }   mediaplayer player = new mediaplayer();    //mediacursoradapter class construction (what show )  private class mediacursoradapter extends simplecursoradapter {       public mediacursoradapter(context context, int layout, cursor c) {          super(context, layout, c,                 new string[]{mediastore.audio.albums.album_id, mediastore.mediacolumns.title, mediastore.extra_media_artist, mediastore.audio.audiocolumns.duration},                  new int[]{r.id.icon, r.id.title, r.id.artistname, r.id.duration});      }        @requiresapi(api = build.version_codes.m)     @override     public void bindview(view view, context context, cursor cursor) {         textview title = (textview) view.findviewbyid(r.id.title);         imageview img = (imageview) view.findviewbyid(r.id.icon);         textview name = (textview) view.findviewbyid(r.id.artistname);         textview duration = (textview) view.findviewbyid(r.id.duration);          // icon         long albumid = long.parselong((cursor.getstring(cursor.getcolumnindex(mediastore.audio.albums.album_id))));          uri sartworkuri = uri.parse("content://media/external/audio/albumart");         uri uri = contenturis.withappendedid(sartworkuri, albumid);         contentresolver res = context.getcontentresolver();         inputstream in = null;         try {             in = res.openinputstream(uri);         } catch (filenotfoundexception e) {             e.printstacktrace();         }         bitmap artwork = bitmapfactory.decodestream(in);         img.setimagebitmap(artwork);           title.settext(cursor.getstring(                 cursor.getcolumnindex(mediastore.mediacolumns.title)));          name.settext(cursor.getstring(                 cursor.getcolumnindex(mediastore.extra_media_artist)));           long durationinms = long.parselong(cursor.getstring(                 cursor.getcolumnindex(mediastore.audio.audiocolumns.duration)));          double durationinmin = ((double) durationinms / 1000.0) / 60.0;          durationinmin = new bigdecimal(double.tostring(durationinmin)).setscale(2, bigdecimal.round_up).doublevalue();          duration.settext("" + durationinmin);          view.settag(cursor.getstring(cursor.getcolumnindex(mediastore.mediacolumns.data)));     }      @override     public view newview(context context, cursor cursor, viewgroup parent) {         layoutinflater inflater = layoutinflater.from(context);         view v = inflater.inflate(r.layout.list_layout, parent, false);          bindview(v, context, cursor);          return v;     }  } } 

in style :

<style name="textcolor">     <item name="android:textcolor">#00ff00</item> </style>    

in layout file :

<textview  style="@style/textcolor" /> 

this fix color 1 default want.